[FIX] hr_timesheet: add fallback to current company to get UoM

Steps to reproduce:
-------------------
- install helpdesk_fsm and sale_timesheet;
- to be in a multi-company environment;
- create a new helpdesk team with "Timesheets", "Time Billing";
- the newly created project has no company;
- create a service product that creates a task with UoM in hours
in the newly created project for the helpdesk team;
- create a sale order with this product with a quantity of 100 hours and confirm it;
- in the helpdesk app (in the new team), create a ticket linked to the sale order line
of the product (the customer is necessary);
- on the ticket the "Remaining Hours on SO" is 100 hours;
- create a timesheet directly in the tree view;
- the remaining hours of the sale order are reduced;
- create a timesheet from the timer;
- the remaining hours of the sale order are not reduced;

Cause:
------
During the link between the newly created timesheet and the ticket,
we write to the `helpdesk_ticket_id` field (during the flush) in the `account.analytic.line` record.
As a result, we pass in the override of the `write` method, which calls `_timesheet_preprocess`.
Without a company on the project (or on the analytic account if there is one),
the value `{'product_uom_id': False}` will be added to the values to be written to the timesheet.
Without a unit of measurement, the timesheet will not be used to calculate the remaining hours.

Solution:
---------
Add a fallback on the current company if no company is found.

opw-3651830

closes odoo/odoo#149917

X-original-commit: 2e5c13b0dea40f349e96cadf9d02fdb3c1746c7e
Signed-off-by: Xavier Bol (xbo) <xbo@odoo.com>

addons/hr_timesheet/models/hr_timesheet.py

@@ -373,7 +373,7 @@ class AccountAnalyticLine(models.Model):
                 vals['partner_id'] = data.partner_id.id
             if not vals.get('product_uom_id'):
                 company = account_per_id[vals['account_id']].company_id or data.company_id
-                vals['product_uom_id'] = uom_id_per_company.get(company.id, company.project_time_mode_id.id)
+                vals['product_uom_id'] = uom_id_per_company.get(company.id, company.project_time_mode_id.id) or self.env.company.project_time_mode_id.id
         return vals_list
 
     def _timesheet_postprocess(self, values):

addons/hr_timesheet/tests/test_performance.py

@@ -2,7 +2,9 @@
 # Part of Odoo. See LICENSE file for full copyright and licensing details.
 
 from odoo.addons.hr_timesheet.tests.test_timesheet import TestCommonTimesheet
+from odoo.tests import tagged
 
+@tagged('post_install', '-at_install')
 class TestPerformanceTimesheet(TestCommonTimesheet):
 
     def test_timesheet_preprocess(self):
@@ -13,7 +15,7 @@ class TestPerformanceTimesheet(TestCommonTimesheet):
         } for i in range(17) for project in projects])
         self.env.invalidate_all()
         self.env.registry.clear_cache()
-        with self.assertQueryCount(5):
+        with self.assertQueryCount(8):
             self.env['account.analytic.line']._timesheet_preprocess([
                 {'task_id': task.id} for task in tasks for _i in range(10)
             ])

addons/hr_timesheet/tests/test_timesheet.py

@@ -594,6 +594,14 @@ class TestTimesheet(TestCommonTimesheet):
         self.assertEqual(timesheet_with_task.product_uom_id, self.task1.company_id.project_time_mode_id,
                          "The product_uom_id of the timesheet should be equal to the task's company uom "
                          "if the project's analytic account has no company_id")
+        # Remove the company also on the project to be sure we find a UoM
+        self.project_customer.company_id = False
+        timesheet_with_project.with_user(self.user_employee).write(
+            {'unit_amount': 2.0, 'project_id': self.project_customer.id})
+        self.assertEqual(timesheet_with_project.product_uom_id, self.env.company.project_time_mode_id,
+                         "The product_uom_id of the timesheet should be equal to the company uom "
+                         "if the project's analytic account and the project have no company_id")
+
 
     def test_create_timesheet_with_default_employee_in_context(self):
         timesheet = self.env['account.analytic.line'].with_context(default_employee_id=self.empl_employee.id).create({